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laiz [17]
3 years ago
11

What several factors help the veins push blood back to the heart

Chemistry
1 answer:
Tomtit [17]3 years ago
6 0
A)Constant pumping from the heart which provides adequate pressure necessary to move the blood through the arteries and veins
B)Gravitational force
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Suggest why helium can be used as a carrier gas but oxygen cannot.
SCORPION-xisa [38]
Because helium is lighter then the oxygen .and due to this helium gass carrier go upward easily .
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3 years ago
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Which is the strongest base among NO3-, So4-, CH3COO- and Cl-​
vodomira [7]

Answer:

CH3COO-

Explanation:

The conjugate base if a weak acid is a strong base, and the conjugate base of a strong acid is a weak base.

Acetic acid is a weak acid, so its conjugate base (CH3COO-) is a strong base.

Nitric, sulfuric, and hydrochloric acids are all strong acid. Their conjugate bases (NO3-, SO4^2-, and Cl- are all weak bases.

3 0
2 years ago
Concept Review<br> 14.11. Can a reaction that is not reversible achieve chemical equilibrium?
MakcuM [25]

Answer:

No

Explanation:

Chemical equilibrium is reached by the forward reaction rate equaling the reverse reaction rate. If the reaction is not reversible, this could not occur.

7 0
3 years ago
Consider this equation: 2.524 g (5.1 × 106 g) ÷ (6.85 × 103 g) = ? How many significant figures should the result have?
weqwewe [10]

Answer:

7

Explanation:

2.524g(5.1)(106)g

(6.85)(103)g

=

1364.4744g2

705.55g

=

1364.4744g

705.55

=

1364.4744g

705.55

=1.933916g

6 0
3 years ago
Which of the following elements is in the same group as Sulfur (S)?
ikadub [295]

Answer:

<u><em>PLEASE SHOW ME THE ELEMENTS OR I WOULD ENLIST ALL THE ELEMENTS.</em></u>

Explanation:

Group 6A (or VIA) of the periodic table are the chalcogens: the nonmetals oxygen (O), sulfur (S), and selenium (Se), the metalloid tellurium (Te), and the metal polonium (Po)

4 0
2 years ago
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